Product Overview
GE Fanuc IC697CPX935 is a single-slot, 96 MHz Series 90-70 central processing unit with 32-bit floating-point execution, 1 Mbyte of battery-backed fast CMOS user memory, and 256 Kbytes of optional non-volatile user flash memory. The CPU installs in slot 1 of rack 0 and communicates with Series 90-70 I/O and option modules through the rack backplane.
This is the fast-memory 1 Mbyte CPX model. Do not select it only by front-panel appearance: record the complete catalog number, hardware suffix, firmware release, user-memory image, rack configuration, serial-port use, and installed option modules before replacement.
Technical Specifications
| Parameter |
IC697CPX935 specification |
| Manufacturer |
GE Fanuc Automation |
| Product family |
Series 90-70 |
| Product type |
Central processing unit (CPU) |
| Catalog number |
IC697CPX935 |
| Rack position |
Single slot; slot 1 in rack 0 |
| Processor |
96 MHz 80486DX4, 32-bit, floating point |
| User RAM |
1 Mbyte battery-backed fast CMOS RAM |
| User flash |
256 Kbytes built-in non-volatile flash; optional for program, configuration, and register data |
| Discrete I/O capacity |
12K inputs and outputs, any mix |
| Analog I/O capacity |
Up to 8K analog I/O |
| Boolean execution |
0.4 microseconds per Boolean function |
| Backplane power |
3.1 A nominal from the 5 V bus |
| Backplane standard |
VME C.1 system compatibility |
| Configuration |
Software configured; no DIP switches or jumpers |
| Status and control |
Seven green status LEDs, three-position RUN/STOP switch, and memory-protect keyswitch |
Serial Ports and Protocol Limits
| Port |
Electrical interface |
Protocol notes |
| Port 1 |
RS-232 compatible, 6-pin female RJ-11 |
SNP Slave; Break-Free SNP supported from firmware release 8.00 |
| Port 2 |
RS-485 compatible, isolated, 15-pin female D-connector |
SNP Slave; Break-Free SNP supported from firmware release 8.00 |
| Port 3 |
RS-485 compatible, non-isolated, 15-pin female D-connector |
SNP Slave only |
The CPU datasheet lists no SNPX or RTU support on these three ports. Ethernet programming requires a separate IC697 Ethernet interface such as IC697CMM741 or IC697CMM742; the CPU does not provide an onboard Ethernet port.
Memory, Firmware, and Replacement Checks
- Back up the program, configuration, register data, and fault tables before removing the installed CPU.
- Record the firmware release. Bulk Memory Area support begins with release 7.92; serial-port Load/Store, Datagrams, and default Break-Free SNP behavior on Ports 1 and 2 begin with release 8.00.
- Confirm the existing software can recognize and configure the replacement CPU and its firmware.
- Verify the complete rack and module configuration. The CPU checks the physical configuration at power-up and during operation.
- IC660/IC661 I/O through the appropriate bus controller and IC697 discrete or analog I/O are supported. That does not make every Series 90-70 CPU or option module a drop-in substitute.
Battery and Environmental Limits
| Parameter |
Limit |
| Replacement battery |
IC697ACC701 lithium battery |
| Battery shelf life |
5 years at 20°C (68°F) |
| Memory retention without rack power |
6 months nominal |
| Normal operating range |
0 to 50°C (32 to 122°F) at full rack power without forced air |
| Operation from 50 to 60°C |
Use 70 CFM forced air for full rack power, or limit total rack power to 70 W without forced air |
| Time-of-day clock accuracy |
3.5 seconds per day maximum |
| Elapsed-time clock accuracy |
0.01% maximum |
Install the new battery before disconnecting the old battery. Turn rack power off before inserting or removing the CPU.
Dimensions and Shipping Reference
Historical Series 90-70 module listings place the enclosure at approximately 44 × 292 × 222 mm (width × height × depth). Some listings report 38 × 216 × 292 mm because the last two axes are presented in a different order and the face width is measured differently. Published weights also vary by measurement method. The current store logistics record is 1.0 kg.
For air-freight planning, use an estimated package size of 350 × 280 × 100 mm and an estimated gross weight of 1.3 kg. These are packing estimates, not OEM product specifications. Warehouse measurements and the final protective packaging take precedence.
Ordering and Documentation
| Item |
Catalog number |
| 96 MHz Series 90-70 CPU, 1 Mbyte fast memory |
IC697CPX935 |
| Replacement lithium battery |
IC697ACC701 |
| 120 VAC rack fan assembly |
IC697ACC721 |
| 240 VAC rack fan assembly |
IC697ACC724 |
| 24 VDC rack fan assembly |
IC697ACC744 |
The PRODUCT DOCUMENTATION section contains the IC697CPX935 datasheet. Compare the installed hardware suffix and firmware release with the site backup and maintenance records before commissioning a replacement.